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Posted: 6/14/2009 6:41:32 PM EST

Looking for long range shooting comparison, Thanks!
Link Posted: 6/15/2009 6:23:03 AM EST
Originally Posted By KnightofTheOldeCode:

Looking for long range shooting comparison, Thanks!


The best thing to do is to find a free ballistics program that will allow you to run trajectory tables for different loads.

I'm sure there's better freeware out there now, but the ballistics freeware I use (and have used for ~12 years now) is
PCB
Link Posted: 6/15/2009 6:52:04 AM EST
A while back I worked up the ballistics for the relationship between various .223/5.56 loads and the ACOG TA11E BDC, which is calibrated for the 168gr SMK. That thread can be found here.

I don't have the trajectory for 168gr SMK handy, but here's how the 77gr SMK @ 2650 flies and it's variance from the 168 SMK @ 2700fps out to 500 yards:


.223 77gr SMK

0: -2.50"
100: 0"
200: -3.50"
300: -14.23"
400: -33.62"
500: -64.35"

Variation from TA11E BDC:
0: 0"
100: 0"
200: -0.52"
300: -3.58"
400: -4.47"
500: -9.92"
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